#include <stdio.h>
-#include "openssl/ssl.h"
-
-int main() {
- /* Some error codes are special, but the make_errors.go script doesn't know
- * this. This test will catch the case where something regenerates the error
- * codes with the script but doesn't fix up the special ones. */
- if (SSL_R_TLSV1_ALERT_NO_RENEGOTIATION != 100 + SSL_AD_REASON_OFFSET) {
- fprintf(stderr, "SSL alert errors don't match up.\n");
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+
+typedef struct {
+ int id;
+ int in_group_flag;
+} EXPECTED_CIPHER;
+
+typedef struct {
+ /* The rule string to apply. */
+ const char *rule;
+ /* The list of expected ciphers, in order, terminated with -1. */
+ const EXPECTED_CIPHER *expected;
+} CIPHER_TEST;
+
+/* Selecting individual ciphers should work. */
+static const char kRule1[] =
+ "ECDHE-ECDSA-CHACHA20-POLY1305:"
+ "ECDHE-RSA-CHACHA20-POLY1305:"
+ "ECDHE-ECDSA-AES128-GCM-SHA256:"
+ "ECDHE-RSA-AES128-GCM-SHA256";
+
+static const EXPECTED_CIPHER kExpected1[] = {
+ { TLS1_CK_ECDHE_ECDSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_RSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 0 },
+ { TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { -1, -1 },
+};
+
+/* + reorders selected ciphers to the end, keeping their relative
+ * order. */
+static const char kRule2[] =
+ "ECDHE-ECDSA-CHACHA20-POLY1305:"
+ "ECDHE-RSA-CHACHA20-POLY1305:"
+ "ECDHE-ECDSA-AES128-GCM-SHA256:"
+ "ECDHE-RSA-AES128-GCM-SHA256:"
+ "+aRSA";
+
+static const EXPECTED_CIPHER kExpected2[] = {
+ { TLS1_CK_ECDHE_ECDSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 0 },
+ { TLS1_CK_ECDHE_RSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { -1, -1 },
+};
+
+/* ! banishes ciphers from future selections. */
+static const char kRule3[] =
+ "!aRSA:"
+ "ECDHE-ECDSA-CHACHA20-POLY1305:"
+ "ECDHE-RSA-CHACHA20-POLY1305:"
+ "ECDHE-ECDSA-AES128-GCM-SHA256:"
+ "ECDHE-RSA-AES128-GCM-SHA256";
+
+static const EXPECTED_CIPHER kExpected3[] = {
+ { TLS1_CK_ECDHE_ECDSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 0 },
+ { -1, -1 },
+};
+
+/* Multiple masks can be ANDed in a single rule. */
+static const char kRule4[] = "kRSA+AESGCM+AES128";
+
+static const EXPECTED_CIPHER kExpected4[] = {
+ { TLS1_CK_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { -1, -1 },
+};
+
+/* - removes selected ciphers, but preserves their order for future
+ * selections. Select AES_128_GCM, but order the key exchanges RSA,
+ * DHE_RSA, ECDHE_RSA. */
+static const char kRule5[] =
+ "ALL:-kEECDH:-kEDH:-kRSA:-ALL:"
+ "AESGCM+AES128+aRSA";
+
+static const EXPECTED_CIPHER kExpected5[] = {
+ { TLS1_CK_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { TLS1_CK_DHE_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { -1, -1 },
+};
+
+/* Unknown selectors are no-ops. */
+static const char kRule6[] =
+ "ECDHE-ECDSA-CHACHA20-POLY1305:"
+ "ECDHE-RSA-CHACHA20-POLY1305:"
+ "ECDHE-ECDSA-AES128-GCM-SHA256:"
+ "ECDHE-RSA-AES128-GCM-SHA256:"
+ "BOGUS1:-BOGUS2:+BOGUS3:!BOGUS4";
+
+static const EXPECTED_CIPHER kExpected6[] = {
+ { TLS1_CK_ECDHE_ECDSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_RSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 0 },
+ { TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { -1, -1 },
+};
+
+/* Square brackets specify equi-preference groups. */
+static const char kRule7[] =
+ "[ECDHE-ECDSA-CHACHA20-POLY1305|ECDHE-ECDSA-AES128-GCM-SHA256]:"
+ "[ECDHE-RSA-CHACHA20-POLY1305]:"
+ "ECDHE-RSA-AES128-GCM-SHA256";
+
+static const EXPECTED_CIPHER kExpected7[] = {
+ { TLS1_CK_ECDHE_ECDSA_CHACHA20_POLY1305, 1 },
+ { TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 0 },
+ { TLS1_CK_ECDHE_RSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 0 },
+ { -1, -1 },
+};
+
+/* @STRENGTH performs a stable strength-sort of the selected
+ * ciphers and only the selected ciphers. */
+static const char kRule8[] =
+ /* To simplify things, banish all but {ECDHE_RSA,RSA} x
+ * {CHACHA20,AES_256_CBC,AES_128_CBC,RC4} x SHA1. */
+ "!kEDH:!AESGCM:!3DES:!SHA256:!MD5:!SHA384:"
+ /* Order some ciphers backwards by strength. */
+ "ALL:-CHACHA20:-AES256:-AES128:-RC4:-ALL:"
+ /* Select ECDHE ones and sort them by strength. Ties should resolve
+ * based on the order above. */
+ "kEECDH:@STRENGTH:-ALL:"
+ /* Now bring back everything uses RSA. ECDHE_RSA should be first,
+ * sorted by strength. Then RSA, backwards by strength. */
+ "aRSA";
+
+static const EXPECTED_CIPHER kExpected8[] = {
+ { TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA, 0 },
+ { TLS1_CK_ECDHE_RSA_CHACHA20_POLY1305, 0 },
+ { TLS1_CK_ECDHE_RSA_WITH_RC4_128_SHA, 0 },
+ { TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA, 0 },
+ { SSL3_CK_RSA_RC4_128_SHA, 0 },
+ { TLS1_CK_RSA_WITH_AES_128_SHA, 0 },
+ { TLS1_CK_RSA_WITH_AES_256_SHA, 0 },
+ { -1, -1 },
+};
+
+static CIPHER_TEST kCipherTests[] = {
+ { kRule1, kExpected1 },
+ { kRule2, kExpected2 },
+ { kRule3, kExpected3 },
+ { kRule4, kExpected4 },
+ { kRule5, kExpected5 },
+ { kRule6, kExpected6 },
+ { kRule7, kExpected7 },
+ { kRule8, kExpected8 },
+ { NULL, NULL },
+};
+
+static const char *kBadRules[] = {
+ /* Invalid brackets. */
+ "[ECDHE-RSA-CHACHA20-POLY1305|ECDHE-RSA-AES128-GCM-SHA256",
+ "RSA]",
+ "[[RSA]]",
+ /* Operators inside brackets */
+ "[+RSA]",
+ /* Unknown directive. */
+ "@BOGUS",
+ /* Empty cipher lists error at SSL_CTX_set_cipher_list. */
+ "",
+ "BOGUS",
+ /* Invalid command. */
+ "?BAR",
+ /* Special operators are not allowed if groups are used. */
+ "[ECDHE-RSA-CHACHA20-POLY1305|ECDHE-RSA-AES128-GCM-SHA256]:+FOO",
+ "[ECDHE-RSA-CHACHA20-POLY1305|ECDHE-RSA-AES128-GCM-SHA256]:!FOO",
+ "[ECDHE-RSA-CHACHA20-POLY1305|ECDHE-RSA-AES128-GCM-SHA256]:-FOO",
+ "[ECDHE-RSA-CHACHA20-POLY1305|ECDHE-RSA-AES128-GCM-SHA256]:@STRENGTH",
+ NULL,
+};
+
+static void print_cipher_preference_list(
+ struct ssl_cipher_preference_list_st *list) {
+ size_t i;
+ int in_group = 0;
+ for (i = 0; i < sk_SSL_CIPHER_num(list->ciphers); i++) {
+ const SSL_CIPHER *cipher = sk_SSL_CIPHER_value(list->ciphers, i);
+ if (!in_group && list->in_group_flags[i]) {
+ fprintf(stderr, "\t[\n");
+ in_group = 1;
+ }
+ fprintf(stderr, "\t");
+ if (in_group) {
+ fprintf(stderr, " ");
+ }
+ fprintf(stderr, "%s\n", SSL_CIPHER_get_name(cipher));
+ if (in_group && !list->in_group_flags[i]) {
+ fprintf(stderr, "\t]\n");
+ in_group = 0;
+ }
+ }
+}
+
+static int test_cipher_rule(CIPHER_TEST *t) {
+ int ret = 0;
+ SSL_CTX *ctx = SSL_CTX_new(SSLv23_server_method());
+ size_t i;
+
+ if (!SSL_CTX_set_cipher_list(ctx, t->rule)) {
+ fprintf(stderr, "Error testing cipher rule '%s'\n", t->rule);
+ BIO_print_errors_fp(stderr);
+ goto done;
+ }
+
+ /* Compare the two lists. */
+ for (i = 0; i < sk_SSL_CIPHER_num(ctx->cipher_list->ciphers); i++) {
+ const SSL_CIPHER *cipher =
+ sk_SSL_CIPHER_value(ctx->cipher_list->ciphers, i);
+ if (t->expected[i].id != SSL_CIPHER_get_id(cipher) ||
+ t->expected[i].in_group_flag != ctx->cipher_list->in_group_flags[i]) {
+ fprintf(stderr, "Error: cipher rule '%s' evaluted to:\n", t->rule);
+ print_cipher_preference_list(ctx->cipher_list);
+ goto done;
+ }
+ }
+
+ if (t->expected[i].id != -1) {
+ fprintf(stderr, "Error: cipher rule '%s' evaluted to:\n", t->rule);
+ print_cipher_preference_list(ctx->cipher_list);
+ goto done;
+ }
+
+ ret = 1;
+done:
+ SSL_CTX_free(ctx);
+ return ret;
+}
+
+static int test_cipher_rules(void) {
+ size_t i;
+ for (i = 0; kCipherTests[i].rule != NULL; i++) {
+ if (!test_cipher_rule(&kCipherTests[i])) {
+ return 0;
+ }
+ }
+
+ for (i = 0; kBadRules[i] != NULL; i++) {
+ SSL_CTX *ctx = SSL_CTX_new(SSLv23_server_method());
+ if (SSL_CTX_set_cipher_list(ctx, kBadRules[i])) {
+ fprintf(stderr, "Cipher rule '%s' unexpectedly succeeded\n", kBadRules[i]);
+ return 0;
+ }
+ ERR_clear_error();
+ SSL_CTX_free(ctx);
+ }
+
+ return 1;
+}
+
+int main(void) {
+ SSL_library_init();
+
+ if (!test_cipher_rules()) {
return 1;
}
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